The glacial landform for mounds or ridges of till is called a moraine.

Here's a breakdown of different types of moraines:

* Terminal Moraine: A ridge of till marking the furthest advance of a glacier.

* Recessional Moraine: A ridge of till marking a pause in the glacier's retreat.

* Lateral Moraine: A ridge of till that forms along the sides of a glacier.

* Medial Moraine: A ridge of till that forms in the middle of a glacier when two glaciers merge.

* Ground Moraine: A thin, uneven layer of till that is deposited beneath the glacier.

Let me know if you'd like to learn more about any of these moraines!